217781785

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{71287}}^1$

素因数の和:71352

約数の個数: 16

約数和(自身を含む): 287433216

約数和(自身を除く): 69651431

約数列:

[1, 5, 13, 47, 65, 235, 611, 3055, 71287, 356435, 926731, 3350489, 4633655, 16752445, 43556357, 217781785]

約数ペア:

[(1, 217781785), (5, 43556357), (13, 16752445), (47, 4633655), (65, 3350489), (235, 926731), (611, 356435), (3055, 71287)]